Antiskid chain



July 3, 1923. I

" E. A. PORT ZER ANTISKID CHAIN Filed April 2, 1921 Patented July 3, 1923.

EDWARD A. ronrznn, or sub. MARYs ENNS LvANIAQ ANTISKID CHAIN.-

Application filed April 2,

, To all whom it may concern;

Be it known that I, EnwAnnA. Pon'rznn, a citizen of the United States, and a resident of St. Marys, in the county of Elk and'State of Pennsylvania, have invented a new and useful Antiskid Chain, of which the followingis a specification.

My invention relates to anti-skid chains for pneumatic tires and its principal object resides in the provision of a chain of this character which embodies novel cross or traction chains arranged in staggered relation and thereby presenting a maximum and evenly distributed anti-skid or traction surface. r I k A further object of the invention resides in the provision of an anti-skid chain including Y-shaped cross chains or traction elements arranged in staggered relation with respect to the longitudinal or side chains and thereby presenting a balanced traction surface at both sides of the tire as well as at the crest thereof. y v v It is also an object of the'invention to provide an anti-skid chain embodying a novel spring actuated fastener for connecting the ends of the longitudinal elements of the anti-skid chain, and which is of such construction as to preclude water, dust and other foreign matter from the interior thereof.

With the preceding and other objects and advantages in mind, the invention. consists in the novel combination of elements, construction and arrangement of parts and operations to be more fully described hereinafter, claimed and illustrated in the accompanying drawing, wherein:

Figure 1 is a side elevation of 'my improved anti-skid chain applied to a pneumatic tire;

Figure 2 is a top plan view of and Figure 3 is a longitudinal sectional view of the fastener used in conjunction with the invention.

Referring in detail to the. drawing wherein similar characters of reference designate similar parts throughout the several views, the numeral 5 designates a pair'of the chain;

States, is;

The combination with an anti-skid device including parallelsid'e chains, of a'c'ylinder 100 1921. Serial No. 458,161.

parallel side chains or elements adapted to extend circumferentially of the tire,. as shown in Figure 1. v

Carried by the side chains 5 and arranged in staggered relation are. pairs of relatively hort chains 6 which extend' to EL'POlIlt'tO overlie the crest of the tire, and are'cons nected together by rings or traction elements 7 which are p sed at the crest ofthetir i i Y elements 7 d-t one of the. side chains 5 is Connected with each of the rings orftraction side chains 5 together, I have provided i novel fastenings'which include cylinders 9 I carrying a loop 10 at one end having loose connection with the end. links of the chains 5. Acap 11 is threadeduponthe opposite end of each cylinder'Q-and passingcentrally through the'cap 11 and longitudinally move able in the cylinder 9 is a shank 12 terminatof the adjacent ends of the chains 5.

The shank 12 carries an abutment 14 at its inner end and disposed within the cylin-f der and encircling "the shank and bearing against the abutment '14 and cap 11 is anexpansible coil spring 15. r In order. to move the hook 13 longitudinally againstthejtension of the spring 15, the shank 12 is formed f with oppositely extending finger. engaging 8 elements 16.

Y It is to be understoodthat the form of my invention herein' shown and described is to,

be taken as a preferred example of thesa me, and that various'changes'in' the shape, size invention claim. 1 t

Having thus described myinvention, what I claim as new and desire to secure and pro.- tect by Letters Patent of the United or the scope of I the subjoined ing in a book 13 engageable with one link J and arrangement of parts maybe resorted to without departing from the spirit of'the carried by one endof each chain, a cap arcoil spring in each cylinder and normally urgingsaid hooks toward the cylinder, and

a finger engaging element carried by" each hook, said element interposed between the hook and the cylinder and in'the same plane as the hook, whereby said finger engaging 1 element is moved against tension of the spring for the purpose of engaging or dis engaging the hook from the chain. 7

- w -EDWARD A. PORTZER. 

